//** Smooth Navigational Menu- By Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Script Download/ instructions page: http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/
//** Menu created: Nov 12, 2008

//** Dec 12th, 08" (v1.01): Fixed Shadow issue when multiple LIs within the same UL (level) contain sub menus: http://www.dynamicdrive.com/forums/showthread.php?t=39177&highlight=smooth

//** Feb 11th, 09" (v1.02): The currently active main menu item (LI A) now gets a CSS class of ".selected", including sub menu items.

//** May 1st, 09" (v1.3):
//** 1) Now supports vertical (side bar) menu mode- set "orientation" to 'v'
//** 2) In IE6, shadows are now always disabled

//** July 27th, 09" (v1.31): Fixed bug so shadows can be disabled if desired.
//** Feb 2nd, 10" (v1.4): Adds ability to specify delay before sub menus appear and disappear, respectively. See showhidedelay variable below

var ddsmoothmenu = {

    //Specify full URL to down and right arrow images (23 is padding-right added to top level LIs with drop downs):
    arrowimages: imageslist,
    transition: {
        overtime: 300,
        outtime: 300
    }, //duration of slide in/ out animation, in milliseconds
    shadow: {
        enable: false,
        offsetx: 5,
        offsety: 5
    }, //enable shadow?
    showhidedelay: {
        showdelay: 100,
        hidedelay: 200
    }, //set delay in milliseconds before sub menus appear and disappear, respectively
    ///////Stop configuring beyond here///////////////////////////
    
    detectwebkit: navigator.userAgent.toLowerCase().indexOf("applewebkit") != -1, //detect WebKit browsers (Safari, Chrome etc)
    detectie6: document.all && !window.XMLHttpRequest,
    
    getajaxmenu: function($, setting){ //function to fetch external page containing the panel DIVs
        var $menucontainer = $('#' + setting.contentsource[0]) //reference empty div on page that will hold menu
        $menucontainer.html("Loading Menu...")
        $.ajax({
            url: setting.contentsource[1], //path to external menu file
            async: true,
            error: function(ajaxrequest){
                $menucontainer.html('Error fetching content. Server Response: ' + ajaxrequest.responseText)
            },
            success: function(content){
                $menucontainer.html(content)
                ddsmoothmenu.buildmenu($, setting)
            }
        })
    },
    
    
    buildmenu: function($, setting){
        var smoothmenu = ddsmoothmenu
        var $mainmenu = $("#" + setting.mainmenuid + ">ul") //reference main menu UL
        $mainmenu.parent().get(0).className = setting.classname || "ddsmoothmenu"
        var $headers = $mainmenu.find("ul").parent()
        $headers.hover(function(e){
            $(this).children('a:eq(0)').addClass('selected')
        }, function(e){
            $(this).children('a:eq(0)').removeClass('selected')
        })
        $headers.each(function(i){ //loop through each LI header
            var $curobj = $(this).css({
                zIndex: 100 - i
            }) //reference current LI header
            var $subul = $(this).find('ul:eq(0)').css({
                display: 'block'
            })
            $subul.data('timers', {})
            this._dimensions = {
                w: this.offsetWidth,
                h: this.offsetHeight,
                subulw: $subul.outerWidth(),
                subulh: $subul.outerHeight()
            }
            this.istopheader = $curobj.parents("ul").length == 1 ? true : false //is top level header?
            $subul.css({
                top: this.istopheader && setting.orientation != 'v' ? this._dimensions.h + "px" : 0
            })
            $curobj.children("a:eq(0)").css(this.istopheader ? {
                paddingRight: smoothmenu.arrowimages.down[2]
            } : {}).append( //add arrow images
'<img src="' + (this.istopheader && setting.orientation != 'v' ? smoothmenu.arrowimages.down[1] : smoothmenu.arrowimages.right[1]) +
            '" class="' +
            (this.istopheader && setting.orientation != 'v' ? smoothmenu.arrowimages.down[0] : smoothmenu.arrowimages.right[0]) +
            '" style="border:0;" />')
            if (smoothmenu.shadow.enable) {
                this._shadowoffset = {
                    x: (this.istopheader ? $subul.offset().left + smoothmenu.shadow.offsetx : this._dimensions.w),
                    y: (this.istopheader ? $subul.offset().top + smoothmenu.shadow.offsety : $curobj.position().top)
                } //store this shadow's offsets
                if (this.istopheader) 
                    $parentshadow = $(document.body)
                else {
                    var $parentLi = $curobj.parents("li:eq(0)")
                    $parentshadow = $parentLi.get(0).$shadow
                }
                this.$shadow = $('<div class="ddshadow' + (this.istopheader ? ' toplevelshadow' : '') + '"></div>').prependTo($parentshadow).css({
                    left: this._shadowoffset.x + 'px',
                    top: this._shadowoffset.y + 'px'
                }) //insert shadow DIV and set it to parent node for the next shadow div
            }
            $curobj.hover(function(e){
                var $targetul = $subul //reference UL to reveal
                var header = $curobj.get(0) //reference header LI as DOM object
                clearTimeout($targetul.data('timers').hidetimer)
                $targetul.data('timers').showtimer = setTimeout(function(){
                    header._offsets = {
                        left: $curobj.offset().left,
                        top: $curobj.offset().top
                    }
                    var menuleft = header.istopheader && setting.orientation != 'v' ? 0 : header._dimensions.w
                    menuleft = (header._offsets.left + menuleft + header._dimensions.subulw > $(window).width()) ? (header.istopheader && setting.orientation != 'v' ? -header._dimensions.subulw + header._dimensions.w : -header._dimensions.w) : menuleft //calculate this sub menu's offsets from its parent
                    if ($targetul.queue().length <= 1) { //if 1 or less queued animations
                        $targetul.css({
                            left: menuleft + "px",
                            width: header._dimensions.subulw + 'px'
                        }).animate({
                            height: 'show',
                            opacity: 'show'
                        }, ddsmoothmenu.transition.overtime)
                        if (smoothmenu.shadow.enable) {
                            var shadowleft = header.istopheader ? $targetul.offset().left + ddsmoothmenu.shadow.offsetx : menuleft
                            var shadowtop = header.istopheader ? $targetul.offset().top + smoothmenu.shadow.offsety : header._shadowoffset.y
                            if (!header.istopheader && ddsmoothmenu.detectwebkit) { //in WebKit browsers, restore shadow's opacity to full
                                header.$shadow.css({
                                    opacity: 1
                                })
                            }
                            header.$shadow.css({
                                overflow: '',
                                width: header._dimensions.subulw + 'px',
                                left: shadowleft + 'px',
                                top: shadowtop + 'px'
                            }).animate({
                                height: header._dimensions.subulh + 'px'
                            }, ddsmoothmenu.transition.overtime)
                        }
                    }
                }, ddsmoothmenu.showhidedelay.showdelay)
            }, function(e){
                var $targetul = $subul
                var header = $curobj.get(0)
                clearTimeout($targetul.data('timers').showtimer)
                $targetul.data('timers').hidetimer = setTimeout(function(){
                    $targetul.animate({
                        height: 'hide',
                        opacity: 'hide'
                    }, ddsmoothmenu.transition.outtime)
                    if (smoothmenu.shadow.enable) {
                        if (ddsmoothmenu.detectwebkit) { //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
                            header.$shadow.children('div:eq(0)').css({
                                opacity: 0
                            })
                        }
                        header.$shadow.css({
                            overflow: 'hidden'
                        }).animate({
                            height: 0
                        }, ddsmoothmenu.transition.outtime)
                    }
                }, ddsmoothmenu.showhidedelay.hidedelay)
            }) //end hover
        }) //end $headers.each()
        $mainmenu.find("ul").css({
            display: 'none',
            visibility: 'visible'
        })
    },
    
    init: function(setting){
        if (typeof setting.customtheme == "object" && setting.customtheme.length == 2) { //override default menu colors (default/hover) with custom set?
            var mainmenuid = '#' + setting.mainmenuid
            var mainselector = (setting.orientation == "v") ? mainmenuid : mainmenuid + ', ' + mainmenuid
            document.write('<style type="text/css">\n' +
            mainselector +
            ' ul li a {background:' +
            setting.customtheme[0] +
            ';}\n' +
            mainmenuid +
            ' ul li a:hover {background:' +
            setting.customtheme[1] +
            ';}\n' +
            '</style>')
        }
        this.shadow.enable = (document.all && !window.XMLHttpRequest) ? false : this.shadow.enable //in IE6, always disable shadow
        jQuery(document).ready(function($){ //ajax menu?
            if (typeof setting.contentsource == "object") { //if external ajax menu
                ddsmoothmenu.getajaxmenu($, setting)
            }
            else { //else if markup menu
                ddsmoothmenu.buildmenu($, setting)
            }
        })
    }
    
} //end ddsmoothmenu variable
